Comparison of N Class 55 'Deltic' models
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| Manufacturer | Lima | Graham Farish | Graham Farish | Graham Farish |
| Year model introduced | 1978 | 1984 | 2003 | 2014 |
| DCC Capability | DCC incompatible | DCC compatible but no socket | DCC Ready. 6-pin socket | DCC Ready. 6-pin socket |
| Detailing | ||||
| Bodyshell - factory-fitted separate details | ||||
| Bodyside Steps | No | No | No |
Yes |
| Exhausts | No | No | No |
Yes |
| Fan Grill (etched) | No | No | No |
Yes |
| Fan(s) | No | No | No |
Yes |
| Handrails | No | No | No |
Yes |
| Horn(s) | No | No | No |
Yes |
| Lamp irons | No | No | No |
Yes |
| Side grilles (etched) | No | No | No |
Yes |
| Chassis/underframe detail | ||||
| Battery box | No |
Yes |
Yes |
Yes |
| Footsteps | No | No | No |
Yes |
| Fuel tank | No |
Yes |
Yes |
Yes |
| Cab, footplate & interior detail | ||||
| Detailed & painted | No | No | No |
Yes |
| Glazing | No |
Yes |
Yes |
Yes |
| Seating | No | No | No |
Yes |
| Window wipers | No | No | No |
Yes |
| Wheel "aesthetics" | ||||
| Chemically-blackened | No | No | No |
Yes |
| Metal-pin point bearings | No | No | No |
Yes |
| Nickel-plated |
Yes |
No | No | No |
| Painted | No |
Yes |
Yes |
Yes |
| Bufferbeam detail (in detailing pack) | ||||
| Cosmetic coupling | No | No | No |
Yes |
| Pipework (for front) | No | No | No |
Yes |
| Pipework (for rear) | No | No | No |
Yes |
| Mechanical | ||||
| Body Construction | No |
Plastic |
Plastic |
Plastic with metal parts |
| Chassis construction |
Lightweight |
Lightweight |
Lightweight |
Plastic & metal |
| Loco-driven wheels (number of) | No |
6 wheels |
6 wheels |
12 wheels |
| Minimum radius |
Radius 1 |
Radius 2 |
Radius 2 |
Radius 2 |
| Coupling socket/mounting | ||||
| Fixed |
Yes |
Yes |
Yes |
No |
| NEM pockets | No | No | No |
Yes |
| Coupling type |
N-gauge standard Arnold-Rapido |
N-gauge standard Arnold-Rapido |
N-gauge standard Arnold-Rapido |
N-gauge Arnold-Rapido with NEM socket |
| Weighting (to assist adhesion) | ||||
| Within chassis | No |
Yes |
Yes |
Yes |
| Separating the body from the chassis | No |
Secured with one or more screws |
Secured with one or more screws |
Secured with one or more screws |
| Electrical | ||||
| Motor type | No |
Can motor |
5-pole with two flywheels |
5-pole with two flywheels |
| Motor location | No |
Centre of chassis |
Centre of chassis |
Centre of chassis |
| Power collection |
2 rail DC |
2 rail DC |
2 rail DC |
2 rail DC |
| Working lights | ||||
| Directional headlights & tail lights | No | No | No |
Yes |
| Illuminated headcodes | No | No | No |
Yes |
| Pickups | No |
Power bogie only |
Power bogie only |
All wheels |
| DCC speaker |
No provision for speaker |
No provision for speaker |
No provision for speaker |
No provision for speaker |
| Items in Stock | View | View | View | View |